Shops are being told to take bottled water off the shelves after inspectors found they contained "elevated" levels of arsenic.
The Food Safety Authority issued a recall notice yesterday.
Hundreds of batches of water bottled in Ireland were found to be contaminated with arsenic above legal limits.
It's mostly own-brand water at at shops and supermarkets which has been affected.
Aldi, Lidl, and Dunnes Stores have been told to take water off the shelf.
So have the convenience stores Spar, Mace, Londis, and Applegreen.
Chippers will have to clear their fridges too, because water bottled for members of the Irish Traditional Italian Chippers Assocation are also on the list.
Retailers are being asked to check the list on the Food Safety Authority's website, and notices will be put up at the point of sale.
Arsenic is a heavy metal which occurs naturally in water -- but the levels are strictly monitored by regulators in all water for human consumption.
Long-term exposure to the substance from drinking water supplies can cause cancer and skin lesions.
A spokesperson for the Food Safety Authority said the recall notice was a precautionary measure, and that there is no acute danger from drinking the water.
The public is being told check their cupboards for any of the affected batch numbers -- and to seek advice from their GP if they've been drinking the water and feel ill.
